急啊!!!VB编程高手请进!
来源:百度知道 编辑:UC知道 时间:2024/05/30 06:51:29
VB里有反正切函数Atn,请问有没有反正弦函数或反余弦函数,关键字是什么?
函数
由基本函数导出之公式
Secant(正割)
Sec(X) = 1 / Cos(X)
Cosecant(余割)
Cosec(X) = 1 / Sin(X)
Cotangent(余切)
Cotan(X) = 1 / Tan(X)
Inverse Sine
(反正弦)
Arcsin(X) = Atn(X / Sqr(-X * X + 1))
Inverse Cosine
(反余弦)
Arccos(X) = Atn(-X / Sqr(-X * X + 1)) + 2 * Atn(1)
Inverse Secant
(反正割)
Arcsec(X) = Atn(X / Sqr(X * X - 1)) + Sgn((X) - 1) * (2 * Atn(1))
Inverse Cosecant
(反余割)
Arccosec(X) = Atn(X / Sqr(X * X - 1)) + (Sgn(X) - 1) * (2 * Atn(1))
Inverse Cotangent
(反余切)
Arccotan(X) = Atn(X) + 2 * Atn(1)
Hyperbolic Sine
(双曲正弦)
HSin(X) = (Exp(X) - Exp(-X)) / 2
Hyperbolic Cosine
(双曲余弦)
HCos(X) = (Exp(X) + Exp(-X)) / 2
Hyperbolic Tangent
(双曲正切)
HTan(X) = (Exp(X) - Exp(-X)) / (Exp(X) + Exp(-X))
Hy